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http://iono.jpl.nasa.gov//latest_rti_global.html
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http://iono.jpl.nasa.gov//storm.html
Solar activity such as flares and coronal mass ejections often produce large variations in the particle and electromagnetic radiation incident upon the earth. Such variations can, in turn, lead to disturbances of the "quiet-time" magnetosphere and ionosphere. These disturbances, when affecting the ionosphere are known as ionospheric storms, tend to generate large disturbances in ionospheric density distribution, total electron content, and the ionospheric current system. Ionospheric storms have important terrestrial consequences such as disrupting satellite communications and interrupting the flow of electrical energy over power grids. They also provide the most challenging conditions under which accurate assessment of the vertical delay calibrations, to be used in the WAAS aircraft navigation system, must be maintained. Thus, it is important to monitor such storms, and, if possible, forecast their evolution.
more info...
http://iono.jpl.nasa.gov//storm.html
Solar activity such as flares and coronal mass ejections often produce large variations in the particle and electromagnetic radiation incident upon the earth. Such variations can, in turn, lead to disturbances of the "quiet-time" magnetosphere and ionosphere. These disturbances, when affecting the ionosphere are known as ionospheric storms, tend to generate large disturbances in ionospheric density distribution, total electron content, and the ionospheric current system. Ionospheric storms have important terrestrial consequences such as disrupting satellite communications and interrupting the flow of electrical energy over power grids. They also provide the most challenging conditions under which accurate assessment of the vertical delay calibrations, to be used in the WAAS aircraft navigation system, must be maintained. Thus, it is important to monitor such storms, and, if possible, forecast their evolution.